The Contax 645 to Sony E-Mount Adapter - FotodioX Pro Lensfrom Contax 645 to Sony E-Mount Adapter - FotodioX Pro Lensallows a Contax 645-mount lens to be used with a Sony E-mount camera. The adapter is designed to support focusing to infinity, is constructed from brass and aluminum alloy, and features stainless steel lens mounting rings to provide a durable yet lightweight camera-to-lens or camera-to-adapter connection.

This lens adapter does not support electronic communication between an attached camera and lens, so lens functions that rely on electronic communication with the camera body, like autofocus, AE metering, and image stabilization, will not function. To manually control the amount of light that enters a Sony E-mount camera when using this adapter kit, an integrated iris mechanism allows for approximate adjustments of brightness as well as depth-of-field.

Contax 645 Lens to Sony E Body    Supports Focusing to Infinity    Brass and Aluminum Alloy Construction    Built-In Iris for Aperture Control

Related Questions and Answers

Q: 1. Can you change the aperture on the lens or stop it down at all?

A: It the lenses you are using have an f/stop ring you can control the f/stop from that. If it does not the adapter has a diaphragm that you can open and close to control the amount of light getting to the camera. The adapter is manual only so it does not transfer any electronics to the camera to control f/stops or autofocus.

Q: 2. Is nikond7100 right for a pantax af

A: I am not sure I understand your question exactly, but if you mean:Will your Nikon d7100 be able to auto focus your Pentax lens using this adapter? the answer is, No. If you are asking is this the right adaptor for your pentax AF lens? then Yes. Pentax has not changed their lens mounting type (645A) since the original 645 came out in 1984. They have created the 645A, 645FA, 465FA2... lenses, but the difference is only the addition of autofocus contacts and not the flange distance. If you look up their latest camera the Pentax 645Z the specs say it is compatible with a a 645A style lense. So, all that to say if you are trying to put a Pentax 645 lens on a Nikon F mount then this adaptor will get it done. I purchased the Canon FD to Nikon F adaptor and it works for the most part. I have a few lenses where the back focus is not correct, but other than than it works fine if you don't mind manual focusing.

Q: 3. Will this adapter work with an Auto Mamiya-Sekor CS 50mm f/1.4 Lens?

A: Yes this adapter will work with your Auto Mamiya-Sekor CS 50mm f/1.4 Lens on a sony E-Mount camera.

Q: 4. May this adaptor accepts Contax G 21 mm without the need of cutting the roots of the lens itself?

A: Hi, you can use the Contax 21mm lens with this adapter mounted on a Canon RF mount camera without any alteration of the lens.

Q: 5. does this work with sony e mount, the a6000 as well? thanks

A: I use it with the a7 series with amazing results. I have the 80mm 2.8 and the 150mm 3.5 and they're both insanely sharp. So you should have no problem using it on the a6000. Good luck with your purchase.

Q: 6. Will this adapter work with manual 645 lenses !?

A: The correct adapter for your 645 manual lenses is: FotodioX Adapter for Mamiya 645 Lens to Sony NEX Mount Camera BH #FOPNEXAM645 • MFR #M645-SNYE-PRO https://www.bhphotovideo.com/c/product/994963-REG/fotodiox_m645_nex_p_adapter_for_mamiya_645.html You can attach this adapter as well but you will be paying almost twice as much for it because the integrated control ring allows aperture adjustment on AF lenses. Mamiya MF lenses already has a built in aperture ring.

Q: 7. Hi, does this adapter fit on the sony A7r?thanks

A: The FotodioX Mamiya 645 Lens to Sony NEX is compatible with the a7R, yes.

Q: 8. Is the 645 format a standard like MFT? Meaning, is the Pentax 645 the same mount as a Mamiya 645? Will this adapter work with Mamiya or Schneider-Kreuznach lenses that use the Mamiya 645 mount on Fujifilm GFX cameras? TIA.

A: The Pentax 645 and Mamiya 645 offer the same film format, but with different mounts for their respective lenses. This adapter accepts Pentax 645 lenses that originally worked on the Pentax 645/645AF medium format film bodies or 645Z medium format digital body.

Q: 9. Does this work with the Auto Mamiya-Sekor CS 50mm f/1.4 Lens?

A: This adapter is not compatible with the Auto Mamiya-Sekor CS 50mm f/1.4.

Q: 10. Would the field of view for Contax 645 80/2 lens on a Canon full frame camera change? Would it become 120mm? Thanks.

A: The Canon 645 80mm lens,using the KIPON Lens Mount Adapter for Contax 645 Lens to Canon EF-Mount Camera, would have the field of view of an 80mm lens on a Canon full-frame camera, which would be a short telephoto focal length, rather than the "normal" focal length it is on a 645 camera.